Your Asterisk server may be configured to connect to Diamondcard.us via SIP protocol. Configure your Asterisk server to use the following settings.
; Add to your sip.conf ; ; Diamondcard.us termination [diamondcard] type=peer username=Your_AccountID fromuser=Your_AccountID secret=Your_PIN_code host=sip.diamondcard.us disallow=all allow=gsm,ulaw fromdomain=sip.diamondcard.us
;Add to your extensions.conf
;
; Diamondcard.us termination
[diamondcardterm]
exten => _011.,1,Dial(SIP/${EXTEN:3}@diamondcard)
exten => _011.,2,Congestion
; Include 'diamondcardterm' context into your local context.
This will allow you to dial numbers with a prefix of 011. After the prefix dial the country code and then the number you wish to call.